Henry williams wheeler



(No Model.)

H. W. WHEELER.

SAW.

No. 328,164. Patented 001;. 13,1885.

UNITED STATES PATENT OFFICE.

HENRY WILLIAMS WHEELER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO TATUM& BOWEN, OF SAME PLACE.

SAW.

SPECIFICATION forming part of Letters Patent No. 328,164, dated October13,1885.

Application filed July 1, 1885. Serial No. 170,386. (No model.)

To all whom it may concern:

Be it known that I, HENRY WILLIAMS WHEELER, of the city and county ofSan Francisco, State of California, have invented an Improvement inSaws; and I hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to an improvement in saws of that class known asinsertedtooth and chisel-bit saws.

It consists of supplemental plates or extensions fitted in the peripheryof the saw-plate, extending outward therefrom, and having their frontand rear edges formed to receive the holding-shanks and cutting teeth orbits.

Referring to the accompanying drawing for a more complete explanationofmy invention, the figure is a side view of a portion of a sawplate,showing my improvement and the inserted teeth or bits. v

In all inserted-tooth and chisel-bit saws the saw-plate wears thin uponthe rim or periphery behind the bits from the constant passage of thesawdust and from the friction, and the sockets in which the shanks arefitted soon become enlarged, so that the shanks and bits wear loose fromconstant changing, and the saws soon become worthless on this account.

My invention consists in the insertion of extensions or plates A, whichare fitted in sockets in the periphery of the saw-plate B. These platesproject outwardly from the rim of the saw-plate, in which they arefitted with the usual tongues and grooves, and they are held in place byrivets or pins D.

The cutting-bits E may be of any well-known or desired form, and areheld in place by the segmental shanks C.

The fronts of the plates A are formed to receive the backs of thecutting-bits, the curve being such that these bits and their shanks Cmay be inserted or removed at will, and the rear portion of each plate Ahas also a curved depression,into which the forward portion of the shankC fits.

This construction admits of as many teeth in a saw as can be gotten intoa solid rim, and the arrangement is such that it will not aflect thetension of the saw detrimentally. These pieces A extend from shank toshank C, thus forming with the shanks and bits an entire movable andadjustable rim,which extends to a considerable distance beyond theordinary diameter of the plate.

The cost. of large saw-plates is greatly increased by every additionalinch of diameter; but by my invention I am enabled to extend thediameter of the plate about four inches, thus making a sixty-inch sawwith only a fifty-six-inch plate.

The invention is applicable to all saws in which the chisel-tooth isused, whether the tooth be held by a shank, Wedge, or other device, andis applicable to repairing old saws.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination,with the saw-plate provided with sockets, of theextension-plates fitting the sockets and projecting outwardly beyond theperiphery of the saw-plate and filling the space between the shank ofone cuttingbit and that of the adjoining cutting-bit, substantially asherein described.

2. In a saw, the extension-plates projecting outward from the peripheryof the saw-plate, in combination with the cutting-bits, and theholding-shanks fitted in the periphery of the plate and extending theentire distance between the extensionplates, substantially as hereindescribed.

In witness whereof I have hereunto set my hand.

HENRY WILLIAMS WHEELER.

Witnesses:

LINCOLN SONNTAG, S. I. SMILEY.

